Build Micro SaaS Step by Step: From Idea to First Paying User

This is the roadmap to build micro SaaS without skipping the steps that matter. Each phase has a clear done state before you move on—so you are never “almost ready” for months.

Step 1 — Idea (1 day): One niche, one problem, one sentence solution. Write it down. Ask five potential users if they would pay $10/month. Three yeses means go.

Step 2 — Prototype (3–7 days): Use Cursor to build micro SaaS v1—often a Chrome extension popup plus one action on a target site. No payments yet. Demo to those five people.

Step 3 — Polish (3–5 days): Fix bugs they mention. Improve onboarding text. Add an icon and basic branding so it feels real.

Step 4 — Payments (2–3 days): Stripe test mode, one paid tier, clear upgrade button. Test the full flow yourself twice.

Step 5 — Launch (1 week): Store listing or landing page live. Post where your niche gathers. Email everyone who said yes in step 1.

Step 6 — Iterate (ongoing): Ship small improvements weekly. Reply to support within 24 hours. That is how micro SaaS compounds.

You can walk this path alone—or sign up for the course to learn the skill with guided prompts that mirror these steps for extension-based micro SaaS.